Combination lock



FIG. 1 is a perspective view of “combination lock” showing our new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front side elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a rear side elevational view thereof; and,

FIG. 8 is a perspective view thereof shown in using position.

The broken lines are for illustrative purpose only and form no part of the claimed design. 

The ornamental design for “combination lock”, as shown and described. 